/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jackrabbit.core.state;
import org.apache.jackrabbit.core.ItemId;
import org.apache.jackrabbit.core.util.Dumpable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.PrintStream;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
/**
* A {@link java.util.Map} based <code>ItemStateStore</code> implementation.
*/
public class ItemStateMap implements ItemStateStore, Dumpable {
/** Logger instance */
private static Logger log = LoggerFactory.getLogger(ItemStateMap.class);
/**
* the map backing this <code>ItemStateStore</code> implementation
*/
protected final Map map;
/**
* Creates a new HashMap-backed <code>ItemStateStore</code> implementation.
*/
public ItemStateMap() {
this(new HashMap());
}
/**
* Protected constructor for specialized subclasses
*
* @param map <code>Map</code> implementation to be used as backing store.
*/
protected ItemStateMap(Map map) {
this.map = map;
}
//-------------------------------------------------------< ItemStateStore >
/**
* {@inheritDoc}
*/
public boolean contains(ItemId id) {
return map.containsKey(id);
}
/**
* {@inheritDoc}
*/
public ItemState get(ItemId id) {
return (ItemState) map.get(id);
}
/**
* {@inheritDoc}
*/
public void put(ItemState state) {
ItemId id = state.getId();
if (map.containsKey(id)) {
log.warn("overwriting map entry " + id);
}
map.put(id, state);
}
/**
* {@inheritDoc}
*/
public void remove(ItemId id) {
map.remove(id);
}
/**
* {@inheritDoc}
*/
public void clear() {
map.clear();
}
/**
* {@inheritDoc}
*/
public boolean isEmpty() {
return map.isEmpty();
}
/**
* {@inheritDoc}
*/
public int size() {
return map.size();
}
/**
* {@inheritDoc}
*/
public Set keySet() {
return Collections.unmodifiableSet(map.keySet());
}
/**
* {@inheritDoc}
*/
public Collection values() {
return Collections.unmodifiableCollection(map.values());
}
//-------------------------------------------------------------< Dumpable >
/**
* {@inheritDoc}
*/
public void dump(PrintStream ps) {
ps.println("map entries:");
ps.println();
Iterator iter = keySet().iterator();
while (iter.hasNext()) {
ItemId id = (ItemId) iter.next();
ItemState state = get(id);
dumpItemState(id, state, ps);
}
}
private void dumpItemState(ItemId id, ItemState state, PrintStream ps) {
ps.print(state.isNode() ? "Node: " : "Prop: ");
switch (state.getStatus()) {
case ItemState.STATUS_EXISTING:
ps.print("[existing] ");
break;
case ItemState.STATUS_EXISTING_MODIFIED:
ps.print("[existing, modified] ");
break;
case ItemState.STATUS_EXISTING_REMOVED:
ps.print("[existing, removed] ");
break;
case ItemState.STATUS_NEW:
ps.print("[new] ");
break;
case ItemState.STATUS_STALE_DESTROYED:
ps.print("[stale, destroyed] ");
break;
case ItemState.STATUS_STALE_MODIFIED:
ps.print("[stale, modified] ");
break;
case ItemState.STATUS_UNDEFINED:
ps.print("[undefined] ");
break;
}
ps.println(id + " (" + state + ")");
}
}